CN110091037A - Offshore wind farm tower elastic support reinforced welding new process - Google Patents
Offshore wind farm tower elastic support reinforced welding new process Download PDFInfo
- Publication number
- CN110091037A CN110091037A CN201910363668.5A CN201910363668A CN110091037A CN 110091037 A CN110091037 A CN 110091037A CN 201910363668 A CN201910363668 A CN 201910363668A CN 110091037 A CN110091037 A CN 110091037A
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- welding
- elastic support
- tower
- reinforcement
- groove
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
Abstract
The invention discloses offshore wind farm tower elastic support reinforced welding new processes, comprising the following steps: (1) pre-welding treatment: with sanding machine polishing groove and clearing up the impurity near groove within the scope of 20mm；(2) assembling positioning tack welding: is carried out using solid gas shield welding GMAW；(3) temperature controls: preheating interlayer temperature postweld heat preservation；(4) it welds: first carrying out the welding of reinforcement and elastic support, postweld heat preservation slow cooling；It is whole after reinforcement and elastic support welding to be welded with tower, postweld heat preservation slow cooling；(5) appearance detects；(6) post-weld annealed stress-removal is heat-treated；(7) non-destructive testing.Using the welding method, welding quality is good, appearance beautiful appearance.
Description
Technical field
The present invention relates to welding technology fields, and in particular to offshore wind farm tower elastic support reinforced welding new process.
Background technique
Elastic support is the important component that offshore wind farm tower supports the equipment such as electric appliance inside tower, since elastic support needs
It is welded on inside tower, needs to punch on tower wall according to structure design, while punching according on Strength co-mputation tower wall
It needs to take thickening reinforced structure, Weld quality level must meet existing national standards " bearing device non-destructive testing " (NB/
T47013-2015 it) provides, reaches level-one qualification.But the welding of reinforced structure weld seam has following features and difficult point: 1, weld seam rail
Mark is that curved surface is oval and welding quality requires height, and opposite straight way weld seam is more difficult；2, groove type is the docking of not uniform thickness, relatively
Its groove design and processes scheme is docked in waiting to be comprehensively considered；3, component thickness is big and structural mutation, is easy in welding process
Stress is generated to concentrate.
Summary of the invention
For above situation, the present invention provides a kind of offshore wind farm tower elastic support reinforced welding new processes, for solution
Certainly the above problem provides more effective solution scheme.
The technical solution adopted by the invention is as follows: offshore wind farm tower elastic support reinforced welding new process, including it is following
Step:
(1) pre-welding treatment: being polished the groove between groove, reinforcement and elastic support between reinforcement and tower with sanding machine, and
Clear up the impurity near groove within the scope of 20mm；
(2) tack welding: assembling positioning is first carried out to reinforcement and elastic support using solid gas shield welding GMAW, is arranged every 100mm
One tack weld makes its solid point, every section of tack welding 50mm long, and assembling positioning root stays the gap of 1mm, specifically uses titanium dioxide
Carbon gas shielded arc welding solid welding wire ER50-6, gage of wire Φ 1.2, electric current 200-240A, voltage 26-30V, speed of welding 200-
240mm/min；
(3) heating layer temperature heat preservation: 100 ~ 150 DEG C are uniformly preheating to heat tape within the scope of the 100mm of groove two sides, interlayer temperature
Degree control is at 100-220 DEG C；
(4) it welds:
A, inside is first soldered to by the welding for carrying out reinforcement and elastic support after pasting ceramic substrate on the outside of reinforcement and elastic support
Internal groove face, then to the plane back chipping polishing of outside carbon and welding, outside is welded after being soldered to medial angle weld seam and cleaning of polishing
Face of weld；Postwelding carries out heat preservation slow cooling using heat-preservation cotton covering weld seam, prevents weld seam cold crack；
B, whole after reinforcement and elastic support welding first assemble positioning with tower and weld again, postwelding use heat-preservation cotton covering weld seam into
Row heat preservation slow cooling, prevents weld seam cold crack；
(5) appearance detects: carrying out quality inspection after welder's self-test is qualified, face of weld must not have crackle, stomata, arc crater, slag inclusion, undercut
The defects of；
(6) make annealing stress-removal heat treatment；
(7) non-destructive testing: MT personnel are provided to carry out Magnetic testing, weldering by " bearing device non-destructive testing " (NB/T47013-2015)
Seam need to reach I grades of qualifications；Ultrasound detection is carried out in accordance with regulations in UT personnel, and weld seam need to reach I grades of qualifications.
In above-mentioned technical proposal, wherein the stiffening plate uses Q345E-Z35 as base material, with a thickness of 80mm；The tower
Cylinder plate uses Q345C as base material, with a thickness of t=41.3mm；The elastic support is using Q345E as base material.
Further, the groove that both the reinforcement and tower are docked is by following conceptual design: the angle of internal groove is
40 °, width 20mm, depth 27.5mm；The angle of outer groove is 54 °, width 12mm, depth 11.8mm, intermediate root face 2mm.
Further, in step (4) the whole method and welding parameter with tower assembling positioning of reinforcement and elastic support with
It is identical in step (2).
Further, welding method is to use solid gas shield welding GMAW, welding parameter in step (4) are as follows: welding wire ER50-6,
Gage of wire Φ 1.2, electric current 240-280A, voltage 31-34V, speed of welding 300-400mm/min, shield gas flow rate 20-
25L/min。
Advantages of the present invention: bevel angle is pressed compared with thin plate, cut tiltedly to thicker plate, groove design was both met the requirements of the standard
Also it is able to satisfy practical welding condition；Using solid gas shield welding GMAW, carbon dioxide gas arc welding welding wire ER50-6, base material are matched
Wlding performance matches, and reaches technique requirement；Using the welding method, welding quality is good, appearance beautiful appearance.
Detailed description of the invention
Fig. 1 is the structural relation figure of tower of the present invention, reinforcement and elastic support.
Fig. 2 is groove schematic diagram.
Fig. 3 is annealing stress-removal heat treatment diagram.
Wherein: 1, tower, 2, reinforcement, 3, elastic support.
Specific embodiment
In order to which the purpose of the present invention, technical solution is more clearly understood, below in conjunction with drawings and examples to the present invention
It is described in further detail, it should be understood that described herein the specific embodiments are only for explaining the present invention, is not used to the present invention
The restriction of protection scope, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention.
Referring to Fig.1, it punches on 1 wall of tower for the welding to elastic support 3, and between tower 1 and elastic support 3
It is welded with reinforcement 2.It is right on the basis of groove between tower 1 and reinforcement 2 is as shown in Fig. 2, bevel angle presses compared with thin plate (tower plate)
Thicker plate (stiffening plate) cut tiltedly.The specific design concept of groove are as follows: internal groove width 20mm, 40 ° of bevel angle, depth
27.5mm；Outer groove width 12mm, carries out thicker plate (stiffening plate) by 54 ° of bevel angle, depth 11.8mm, intermediate root face 2mm
Cut oblique (≤1:3) 60mm.
Wind-power tower elastic support reinforced welding new process of the present invention, specifically includes the following steps:
(1) pre-welding treatment: with the slope between groove, reinforcement 2 and the elastic support 3 between sanding machine polishing reinforcement 2 and tower 1
Mouthful, and clear up the impurity near groove within the scope of 20mm；
(2) tack welding: assembling positioning is first carried out to reinforcement 2 and elastic support 3 using solid gas shield welding GMAW, at interval of 100mm
A tack weld, which is arranged, makes its solid point, every section of tack welding 50mm long, and assembling positioning root stays the gap of 1mm, specifically uses two
Carbon oxide gas protects welding wire ER50-6, gage of wire Φ 1.2, electric current 200-240A, voltage 26-30V, speed of welding 200-
240mm/min；
(3) heating layer temperature heat preservation: 100 ~ 150 DEG C are uniformly preheating to heat tape within the scope of the 100mm of groove two sides, interlayer temperature
Degree control is at 100-220 DEG C；
(4) it welds:
A, the welding for carrying out reinforcement 2 and elastic support 3, it is first after the patch ceramic substrate of outside to reinforcement and elastic support assembling positioning
Inside is soldered to internal groove face, pre- anti-welding deformation and reduction welding stress, then to the plane back chipping polishing of outside carbon and welding, outside
Inside welded into fillet weld and trimming surface of polishing after being soldered in side；Postwelding carries out heat preservation using heat-preservation cotton covering weld seam and delays
It is cold, prevent weld seam cold crack；
B, reinforcement and elastic support are whole after welding welds with tower；Postwelding carries out heat preservation slow cooling using heat-preservation cotton covering weld seam,
Prevent weld seam cold crack；
Welding process is all made of solid gas shield welding GMAW, welding parameter are as follows: welding wire ER50-6, gage of wire Φ 1.2, electric current 240-
280A, voltage 31-34V, speed of welding 300-400mm/min, shield gas flow rate 20-25L/min；
Also need to carry out tack welding before the whole welding with tower of reinforcement and elastic support, the method and welding parameter of specific tack welding with
It is identical in step (2)；
(5) appearance detects: carrying out quality inspection after welder's self-test is qualified, face of weld must not have crackle, stomata, arc crater, slag inclusion, undercut
The defects of；
(6) make annealing stress-removal heat treatment after the completion of welding, referring to Fig. 3.The step of stress-removal of annealing is heat-treated are as follows: first heat up,
Heating rate is 380 DEG C/h, and the heating-up time is 1h；When temperature rises to 400 DEG C, heat up according to the speed of 55-68 DEG C/h, temperature
3h is kept the temperature when rising to 620 DEG C；Cool down later according to the speed of 55-87 DEG C/h；
(7) non-destructive testing: MT personnel are provided to carry out Magnetic testing, weldering by " bearing device non-destructive testing " (NB/T47013-2015)
Seam need to reach I grades of qualifications；Ultrasound detection is carried out in accordance with regulations in UT personnel, and weld seam need to reach I grades of qualifications.
It docks, is concentrated to slow down structural mutation and reducing stress, base material uses: reinforcement for not uniform thickness between reinforcement and tower
Plate Q345E-Z35, t=80mm belong to low-alloy high-strength Z-direction performance steel, have preferable low temperature impact properties and Z-direction performance,
Yield strength >=315MPa, tensile strength 470-630MPa, elongation >=35%, -40 DEG C of ballistic work >=34J；Tower plate
Q345C, t=41.3mm belong to Hi-Stren steel, yield strength >=325MPa, tensile strength 470-630MPa, elongation
>=21%, 0 DEG C of ballistic work >=34J；Elastic support Q345E, φ 200mm, belongs to Hi-Stren steel, and -40 DEG C of impacts have
Preferable low temperature impact properties, yield strength >=275MPa, tensile strength 450-600MPa. elongation >=18%, -40 DEG C of impacts
Function >=34J.
Claims (5)
1. offshore wind farm tower elastic support reinforced welding new process, which comprises the following steps:
(1) pre-welding treatment: being polished the groove between groove, reinforcement and elastic support between reinforcement and tower with sanding machine, and
Clear up the impurity near groove within the scope of 20mm；
(2) tack welding: assembling positioning is first carried out to reinforcement and elastic support using solid gas shield welding GMAW, is arranged every 100mm
One tack weld makes its solid point, every section of tack welding 50mm long, and assembling positioning root stays the gap of 1mm, specifically uses titanium dioxide
Carbon gas shielded arc welding solid welding wire ER50-6, gage of wire Φ 1.2, electric current 200-240A, voltage 26-30V, speed of welding 200-
240mm/min；
(3) heating layer temperature heat preservation: 100 ~ 150 DEG C are uniformly preheating to heat tape within the scope of the 100mm of groove two sides, interlayer temperature
Degree control is at 100-220 DEG C；
(4) it welds:
A, the welding of reinforcement and elastic support is carried out, first pastes ceramic substrate in the outside of reinforcement and elastic support, then inside is welded
It is connected to internal groove face, then to the plane back chipping polishing of outside carbon and welding, outside is welded and polished to medial angle weld seam after being soldered
Trimming surface；Postwelding carries out heat preservation slow cooling using heat-preservation cotton covering weld seam；
B, reinforcement and elastic support are whole after welding is welded with tower, and postwelding carries out heat preservation using heat-preservation cotton covering weld seam and delays
It is cold；
(5) appearance detects: carrying out quality inspection after welder's self-test is qualified, face of weld must not have crackle, stomata, arc crater, slag inclusion, undercut
The defects of；
(6) annealing stress-removal heat treatment is done after being soldered together；
(7) non-destructive testing.
2. offshore wind farm tower elastic support reinforced welding new process according to claim 1, which is characterized in that step
(1) groove that reinforcement described in is docked with tower is by following conceptual design: internal groove 20mm, and 40 ° of bevel angle, depth
27.5mm；Outer groove be 11.8mm, 54 ° of bevel angle, width 12mm, intermediate root face 2mm.
3. offshore wind farm tower elastic support reinforced welding new process according to claim 1, which is characterized in that step
(4) welding method is to use solid gas shield welding GMAW, welding parameter are as follows: welding wire ER50-6, gage of wire Φ 1.2, electric current in
240-280A, voltage 31-34V, speed of welding 300-400mm/min, shield gas flow rate 20-25L/min.
4. offshore wind farm tower elastic support reinforced welding new process according to claim 1, which is characterized in that the benefit
Strong plate is welded using Q345E-Z35 as base material；The tower plate is welded using Q345C as base material；The bullet
Property support welded as base material using Q345E.
5. offshore wind farm tower elastic support reinforced welding new process according to claim 1, which is characterized in that step
(4) reinforcement and elastic support are whole identical with step (2) as the method for tower assembling positioning and welding parameter in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910363668.5A CN110091037A (en) | 2019-04-30 | 2019-04-30 | Offshore wind farm tower elastic support reinforced welding new process |
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| CN201910363668.5A CN110091037A (en) | 2019-04-30 | 2019-04-30 | Offshore wind farm tower elastic support reinforced welding new process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110508955A (en) * | 2019-08-16 | 2019-11-29 | 江苏海力风电设备科技股份有限公司 | A kind of wind power foundation slab submerged arc welding new process |
| CN110508954A (en) * | 2019-08-16 | 2019-11-29 | 江苏海力风电设备科技股份有限公司 | A kind of wind power foundation thin plate submerged-arc welding process |
| CN111730179A (en) * | 2020-07-08 | 2020-10-02 | 南通泰胜蓝岛海洋工程有限公司 | Welding process of tower frame door frame |
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